Fig. 7
From: Role of uterine artery Doppler in assessment of unexplained infertility
a, b Transvaginal Doppler ultrasound of both uterine arteries (a right, b left) of female patient aged 31 years old diagnosed with unexplained infertility shows RI of right and left uterine arteries were 0.82 and 0.84 respectively with mean RI 0.83, S/D ratios of right and left uterine arteries were 6.52 and 5.92 respectively with mean S/D ratio 6.22, and PI of right and left uterine arteries were 2.79 and 2.65 respectively with mean PI 2.72